ok well I got a 145 speedo for my car and I put it in and everything was working fine except the miles counter and the trip odometer is what I think it is called. but anyways I ended up taking the whole thing apart and after I put it together the trip odometer still doesn't work whenever one number turns all of them do, and second when I am driving the MPH keep moving up even if I am at a constant speed. I think it has something to do with the magnet inside but I am not sure. Does anyone know anything about speedometers that could help me out.

any input is greatly appreciated

 

Nevermind I figured it out